Microsoft's Aaron Greenberg has said that according to NPD data, sales of Bungie's Halo 3 have outsold the combined sales of six PlayStation 3 exclusives.
"Just in from research team (NPD): Halo 3 has outsold Resistance 1 + 2, Uncharted 1 + 2, Killzone 2 and God of War III combined... wow," he said on Twitter.
Greenberg didn't elaborate on the actual numbers, which would be for the North American market only.
Greenberg is one of the most vocal members of the public-facing Xbox team, and isn't adverse to talking directly about competitors and their business models where more senior executives might be a little more subtle.
At the end of last year he criticised Sony's business model, calling increased sales a "short term bump" and questioning the sustainability of selling consoles at a loss.